Question

Solve the proportion15/a=3/2

Answer 1

`(15)/(a)=(3)/(2)`

to solve for a we have to cross multiply,

`\begin{gathered} (15)/(a)=(3)/(2) \\ 15(2)=3(a) \\ 30=3a \\ (30)/(3)=(3a)/(3) \\ 10=a \\ a=10 \end{gathered}`

Answer: a = 10